Chair back



A portion of the disclosure of this patent document contains materialfor which a claim for copyright is made. The copyright owner has noobjection to the facsimile reproduction by anyone of the patent documentor the patent disclosure, as it appears in the US Patent and TrademarkOffice patent file or records, but reserves all other copyrightswhatsoever.

FIGS. 1-7 show different views of an ornamental design for a back of agaming chair, namely:

FIG. 1 is an upper perspective view of an ornamental design for a chairback;

FIG. 2 is a right elevation view thereof;

FIG. 3 is a left elevation view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

In the drawings, all styles of broken lines depict portions of the chairback that form no part of the claimed design.

CLAIM The ornamental design for a chair back, substantially as shown anddescribed.